Size / Weight / Age

This species is distinguished from its congeners by the following characters: head tubercles and granules of almost equal size; tubercle on dorsal midline of head behind eye absent; numerous, densely set granules, covering whole body except abdominal are; tubercles in dorsal row 28-30, ventral row 23-25, upper and lower lateral rows more than 20, size small, especially in caudal area, while for the dorsal row, increasing from head to base of dorsal; branched rays in D2 9-11.5, A 8-10.5; body without dark blotches (Ref. 59043).

Biology
Glossary
(e.g. epibenthic)

Stays in the biocoenosis of the estuarine silts (Ref. 2058). Occurs in fresh and slightly brackish waters with salinity below 11 ppt , usually over mud bottom. It lives about a year. Females probably lay eggs in 2-3 portions within or under a molluscs shell and the adults die soon after spawning. Feeds mainly on molluscs, crustaceans and chironomid larvae. (Ref.59043).